Improvement in machines foe making tin cans



@nitro tatrs @fitte GHRIS'IIAN 13A-REY, 0F PHILADELPHIA, PENNSYLVANIA.

- Letters Patent No. 71,680, dated December 3,1867.

IMPROVEMENT IN MACHINES FOB. MAKING 'I'IN GANS.

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TO ALL WHOM IT MAY CNCERN:

Be it known that I, CHRISTIAN BARRY, ofthe city and county of Philadelphia, and State of Pennsylvania, j

have invented a new and useful Mode of Manufacturing Cans; and I do hereby declare the following to be a clear andlexact description of the nature thereof, snilicient to enable others skilled in the art to which my invention appertains to fully understand and use the same, reference being hadvto theaccompanying drawings, making part of this specication, in whichy Figures 1 andZ are side elevations of devices employed in makinglcan's according to my invention.

'- Figure 3 is a central vertical section of the can.

Similar letters of reference indicate corresponding parts in the several figures.

My invention has for its object novel means for manufacturing cans, from tin and other metals, and according to the design for which Letters Patent have been granted me, of date November 5, 1867, and consists in a burring or rounding-tool,`for giving the body of thehcan its shape, and in swages or dies for closing the seam between the top and bottom, or covers and the body of said can, as will be hereinafter more fully described.

In carrying out my invention, I form the top and bottom ofthe can by striking up a disk of metal, so

as to assume the shape of a hat, of perfectly cylindrical form, having a low crown, and a rmat right angles thereto. I

This bein a. lied to a stri in -tool the rim is turned-down sc'as to leavea roove on the under side g PP Pp g v 2 g of the covers, between it and the struck-upg part, which groove is to t over the edges of the body of the can The body of the can is formed of a strip or'piece, of metal, having its longitudinal ends so as to'form an unbroken cylinder, having the joint at the side, and its top and bottom free aud-open",

Having thus farconstrneted the can, it is ready to be' applied to the devices shown in the drawings.'

A represents the burr-ing or rounding-tool, consisting of two rolls, B and C, arranged aside of .each other, and mounted on shafts aand b, having their bearing in suitable boxes c, on an vupright framing, D, arising from a base, ci'. The hoxes'of sh'aftra slide between the uprights, andare adjustable by means of a set-screw, d, on .the cross-piecc d', whereby the two rolls are advancedv to and reccded from'each other. The shaft I) has a crank, e, at the end opposite to the rolls, by which motion is communicated to-shaft a by means ofthe gearing E, and causing the rolls to rotate in opposite direction. The rolls are secured to the shafts on the outside of the frame D. The rolI C is of the form of a cylinder, having. its edges bev'elled or chamfered, as at 4The roll B has continuous iianges g at both ends, which project outwardly, in opposite 4directions,'at an angle of forty-five degrees, more or less. '.lhe body of both rolls, between the bevel and flanged edges, is unbroken, being per- Afectly cylindrical: The bevel edges of roll rotate within the flanged edgesof roll B. The cylinder or body of the can, as previously described, is now slipped over the roll B, the roll C is advanced thereto, and motion communicated toboth rolls. The roll C will firmly press the body of the can against the roller B, so that thesaid. body will assume'thc form of the latter, that is, the portion of the body at and near its edges is bent or pressed so as to project outwardly, as shown at z, iig. 1. These projecting edges enter the groove on the lower sido of the lids or'top and bottom. The lids and body should then bo put together, and the can, as partly completed, is now ready for the closing-tool. F represents the closing-tool, (sce iig. 2.) legis a base or foundation,

. from which arise standards united by cross-pieces, forming an uprightframing, G. 0n' thc crcssspicces, there are mounted, in' s u'itableboxes, two shafts, lm, cach carrying, a tooth-wheel, H, meshing into each other. Thel upper shaft Z is provided with a crank-handle, n, by which power is communicated to the shafts.` The shafts rotate in opposite directions, and are extended beyond the frame Gr, and carrythe'closingswagcs or dies J K, consisting of two disks, whose pcripheries may be advanced or receded by means of a set-screw, o, on tbe'crossL piece p, and-which raises and lowers the boxes or bearings of the shaft l, at the end opposite to the crank-handle n; the said boxes sliding between the uprights of frame D. The swage or Edie J has its periphery bcvellcd out'- wardly, as shown at g. The periphery of the swagc or die K is bevelled inwardly, as shown at 7', to about its .middle,'wherc the bevel terminates in a shoulder, s. As the bevel of the swage J is outward, and that of the swage K inward, it is 'evident that, if the-two swages were brought together, they would lie snugly on each other at the point of contact, and occupy this position during rotation, and the inner edge of the swage J will bear against the shoulder s of swage K.. In order to close the seam between the lids or top and bottom and the body of the can, I apply the same, as shown in tig. 2, that ishwith the projecting edges t of one end between the 2 '11,eso

peripherics of the swages or dies. The countersunkhead or lid lies against the outer face ofthe sivage-J, V The position of the lid and body will be fully understood by referenceto u, iig. 3. The swages being rotated, they will cause the can to rotate,y and thus bring-every part of the seam'to the action of both s 'wagesI It isv'desira-blc that the can should be held up against the swage J, so as to'guide it, and make the seam uniform throughout.l It will be noticed that the two swages, rotating and being almost in Contact, will clinch or clamp the parts comprising the joint or seam, so as to lie firmly and closely against each other, without any space between them. The said seam or joint will be found to be so uniformly and perfectly tight that there is' no opportunity for ingress or egress of air, water, or any other. iiuid.

A can constructed according to the above will be found useful for many purposes, especially for alkalies which are put up or4 packed in a heated state. I dispense entirely with solder inA closing the seamV or joint between-'the top orbottom and the body of the can, and therefore claim a great superiority over the old modes of making cans. Should it be desired to have only'the top or bottom flat, and without the outwardly-projeeting Beam, one of the anges of rolls B must be dispenseflwith. The top or bottom will then be soldered as usual, but the other top or bottom will undergo the operation hitherto described.

` From practical operation, my mode is found to produce a can useful, simple, and cheap. Having thus describednmy invention, what I claim as new, and desire to secure by Letters Patent, vis

1. The mode of manufacturing cans, substantially as herein described. l 2. The roll C, with bevelled edgef, and roll B, with flange edge g, operating together, substantially us described for the purpose specified. 4 l I 3. The awa-ge orV die'J', having bevel periphery g, and swage or die K, withvits periphery r s, bevelled and shouldered, operating together substantially as described for the purpose specified.

To the above I have signed my name, this 24th day of October, 1867.

CHRISTIAN BARRY.

Witnesses:

J oHN A.'Wmnnnsnnrn, WM. A. WIEDERSHEIM. 

